Aircraft Systems Quiz

Question 1

One purpose of the dual ignition system on an aircraft engine is to provide for?

Answer 1

Improved Engine Performance

Question 2

An electrical system failure (battery and alternator) occurs during flight. In this situation you would

Answer 2

experience avionics failure

Question 3

The operating principle of float-type carburetors is based on the

Answer 3

Increase in air velocity in the throat of the venturi causing an increase in air pressure.

Question 4

The basic purpose of adjusting the fuel/air mixture at altitude is to

Answer 4

decrease the fuel flow to compensate for decrease air density.

Question 5

During the run-up at a high-elevation airport, a pilot notes a slight engine roughness that is not affected by the magneto check but grows worse during the carburetor heat check. Under these circumstances, what would be the most logical initial action?

Answer 5

Check the results obtained with a leaner mixture setting.

Question 6

While cruising at 9,500 feet MSL, the fuel/air mixture is properly adjusted. What will occur if a descent to 4,500 feet MSL is made without readjusting the mixture?

Answer 6

The fuel/air mixture will become excessively lean.

Question 7

Which condition is most favorable to the development of carburetor icing?

Answer 7

Temperatures between 20-70 degrees and high humidity.

Question 8

If an aircraft is equipped with a fixed-pitch propeller and a float-type carburetor, the first indication of carburetor ice would most likely be

Answer 8

loss of RPMs

Question 9

Applying carburetor heat will

Answer 9

enrich fuel/air mixture

Question 10

If the grade of fuel used in an aircraft engine is lower than specified for the engine, it will most likely cause

Answer 10

detonation

Question 11

Detonation may occur at high-power settings when

Answer 11

the fuel mixture ignites instantly instead of burning progressively and evenly.

Question 12

If a pilot suspects that the engine (with a fixed-pitch propeller) is detonating during climb-out after takeoff, the initial corrective action to take would be to

Answer 12

lower the lose slightly to increase airspeed.

Question 13

The uncontrolled firing of the fuel/air charge in advance of normal spark ignition is known as

Answer 13

pre-ignition

Question 14

To properly purge water from the fuel system of an aircraft equipped with fuel tank sumps and a fuel strainer quick drain, it is necessary to drain fuel from the

Answer 14

fuel strainer drain and the fuel tank sumps

Question 15

For internal cooling, reciprocating aircraft engines are especially dependent on

Answer 15

the circulation of lubricating oil.

Question 16

An abnormally high engine oil temperature indication may be caused by

Answer 16

the oil level being too low.

Question 17

How is engine operation controlled on an engine equipped with a constant-speed propeller?

Answer 17

The throttle controls power output as registered on the manifold pressure gauge and the propellor control regulates the engine RPMs

Question 18

A precaution for the operation of an engine equipped with a constant-speed propeller is to

Answer 18

avoid high manifold pressure settings with low RPMs

Question 19

How should an aircraft preflight inspection be accomplished for the first flight of the day?

Answer 19

Thorough and systematic means as recommended by the manufacturer

Question 20

The most important rule to remember in the event of a power failure after becoming airborne is to

Answer 20

immediately establish the proper gliding altitude and airspeed